摘要
Abstract
To address the challenges of poor adaptability of single supporting schemes for underlying roadways,significant deformation of surrounding rock,and instability of stabilized roadways caused by crossing roadway mining in extremely close coal seam mining,research was conducted using the east wing track roadway at-750 m level in Xuzhuang Coal Mine as the engineering background.Through nu-merical analysis,it is found that the initial influence range of lateral abutment pressure on both sides of the goaf was 36 meters,and the working face tended to stabilize after advancing 25 meters.Based on this,a targeted composite reinforcement scheme for roadway was proposed,utilizing full section high strength prestressed anchor bolts(cables)combined with metal mesh,ladder beams,and floor beam anchor bolts for composite reinforcement and supporting technology,to ensure the overall stability of surrounding rock.Field applications have shown that this technology effectively controls the deformation of surrounding rocks in deep crossing mining roadways,providing a theoretical basis and practical reference for the supporting of floor crossing mining roadways under complex geological and mining stress conditions in the deep.关键词
深部采区/跨大巷回采/复合加固/支护技术Key words
deep mining area/crossing roadway mining/composite reinforcement/supporting technology分类
矿业与冶金
